1. Wear Red

A 2010 study published in the Journal of Experimental Psychology found women loved it when men wore red—and, the same went for women. In a separate study from Rochester University, men were more attractive to women in red as well. It's not just clothes, either: another study found red lipstick had the same effect.

2. Show Off Your Hips

Don't try and hide your hips—flaunt them. Wear pants that show off your figure, and feel free to sway a little when you walk: One study from Texas A&M University found the attractiveness of women went up a whopping 50 percent when they strutted with a hip sway. Just like Shakira always says: hips don't lie.

3. Make Yourself Look Taller

Research has shown women prefer taller men over the short guys of the world, but just because you can't change your height doesn't mean you can't physically make yourself look like you grew a few inches. Experts say sticking to monochromatic color palettes—otherwise known as colors that are the same shade—will make you appear taller. Plus, it looks super classy: You can't go wrong with an all-black look.

4. Highlight the Left Side of Your Face

You might not notice one side of your face being more attractive than the other, but a study published in the journal Experimental Brain Research found people preferred the left side of over the right. Whether you're taking pictures or chatting with someone, turn your head slightly to the right to showcase your left, and you'll instantly look a little better.

5. Travel in Groups

A 2014 study found people typically look much more attractive when they're in groups than they do on their own. So grab your friends and hit up your favorite hot-spots in packs.

6. Fill in Your Eyebrows

Thin eyebrows used to be portrayed as the most attractive style, but the '90s are over. After analyzing pictures of 763 women in a 2017 study, researchers found those with bold brows appeared younger and more attractive. Learn how to fill in your brows for a thicker (but still natural!) look.

7. Put On Some Sunglasses

There might be a reason celebs wear sunglasses all the time. According to one expert, there's actually some science behind it. Researcher Vanessa Brown found people tend to look more attractive when wearing dark shades because of a few reasons: they make your face look more symmetrical, it adds a little mystery , and they have a history of being cool, making you look cooler, too.

8. Walk With a Swagger

All right, guys—just like men think women are more attractive when they sway their hips, the same study found women found men more attractive when they walked with a swagger in their shoulders. But what does that mean, exactly? Basically, it's when you move your shoulders up and down as you walk. Not a lot, but just enough to look natural.

9. Show Some (Arm) Skin

You don't have to show off your legs to appear more attractive. One study found it's actually long arms that men are super attracted to, so start sporting those sleeveless tops whenever you need a little confidence boost.

10. Stop Trying to Look Model-Thin

Ignore those magazine ads! According to one study, men aren't as into super-skinny, model-thin women as you think; they actually think women with normal body weights are more attractive. Instead of striving to become stick-thin, own and accentuate what you've got.

11. Stop Crossing Your Arms

It can quickly become a habit to cross your arms when you're standing, but opening up a little will make you look much more attractive. One 2016 study found having an open posture — especially when you're first meeting someone—makes you look more confident and charismatic whether you're male or female.

12. Show Off Your Jawline

Men who show off their jawlines instantly appear more attractive, all thanks to evolution. One 2011 review dug into the topic and found it's more appealing to women for one specific reason: it's a super masculine feature that shows genetic strength. While your beard is great and all, you might want to trim it up, so your facial structure is a little more prominent.

13. Throw on Some Heels

Heels might make you feel a little confident the second you slip them on, and they're scientifically proven to make you look more attractive, too. The reason? One study found it's simply because it makes women appear more feminine, particularly in the way they walk.

14. Ditch That Slouch

According to Dr. Liza Egbogah, a health and wellness expert focusing on body and posture, good posture can "boost our attractiveness to potential partners," helping to "induce romantic attraction in potential mates." In addition, a 2012 study found that good posture, even if held for a short period of time, can increase levels of testosterone—the "hormone associated with confidence"—by up to 20 percent.

15. Get a Tan

There's a reason, says Bowden, that "most male models have darker skin." Women, he says, are "predisposed to finding darker shades of skin more attractive" in men, as it is associated with danger, virility, and mystery. So, while it's important not to "go overboard" and end up with an "oompa loompa" look, spending a few hours in the sun or lathering with a self-tanning moisturizer can go a long way towards boosting your attractiveness levels.

16. Lean Beats Bulky

"A lot of what guys think what women want is huge muscles," says Patrick Kenger, a man stylist and founder of Pivot Image Consulting. This, however, isn't exactly true, as women actually prefer men who have "less body fat and appear stronger." Instead of looking to bulk up at the gym then, Kenger recommends working towards an "athletic" look, and a lean, toned physique.